Crusher



A. F. WILLIAMS.

CRUSHER'. APPLICATION FILED FEB- 17. 1922.

Patented May 2,1922.

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To all whom it may mm a "citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new, and 'useful Improvementsein Crushers, of which the following is a speci; fication. V p r This invention relates to certain new and useful improvementsin crushers, the pecuwhich are mounted a series of discs -B described and claimed. 7 I The main object of my invention is'to provide means for crushing rock of quarry size into comparatively large pieces,such as lime rock into pieces suitable for burning,- and with only a small amount of finely broken or pulverized rock; and secondly, to increase the capacity of such a crusher;

In the accompanying drawing on which liarities of which will be hereinafter fully like reference letters indicate corresponding parts, Fig. lrepresents a vertical sectional view across the shaft of a crusher exemplifying my invention of the same. V r

The letter A designates a rotor shaft'on'.

throughflwhich pass hammer rods C, eccentric to the'shaft A, for pivotally supportinga plurality of rows of-hammers,'substan-Y- 3O that when hammers of long and short piv otal length relatively to each other, are ar-' ranged alternately/in each row, the rock fed into the'hopper E and into the path of said hammers, is quickly broken up upon a breaker plate F, preferably adjustable about" a hinge bolt G, and adapted to co -operate with said hammers, and that the material is broken into comparatively large pieces between the breaker plate and such long and short hammers as just described; and also that such breaking or crushing occurs with a comparatively small amount of finely broken or pulverized rock. V

The hammers of long pivotal length H,

Bert known thatjl, A'R'r i R 'F, YYILnraiwrs,

;' and 2, a plan view] the crusher."

ff; caus ER.

are enlarged at the-outer end'as sho'wn,'and the operative edges travel'in.anarcabouttheI jfpiv'ot The; short length hammers mounted on the same pivot rod, are prefer-' -ably wider at their outer endii n the direction? ofrotation, so thattheir operative edges likef wise travel the same ar about v thesame V pivot" axis i as the operative-edges.oof the i I hammer having "a relatively narrower 1. 7

head in the planes of rotation. Thus when therock is struck by either the long or the short hammers, the hammers oscillate inthe same are with reference to their-operative edges, although they are of different pivotal length, furthermore, the increased width of the, shorthammers I, provides a greater weight than if the width of the hammers were the same, and thus the short hammers 1 with heavier head, will strike practically the a .betweenthe'long hammers allows .rock. to travel down the breaker plate and intoq contact with thelshort. hammers,'and prosame blow as the long hammers. The space motes the feed or'pa'ssag'e of the rock through 4 The breaker plate F i p rearablyeftwb inclinations on its "inner" face','theupperface J being comparatively 'steepor making j v a large obtuse angle with. the-horizontal plane, while the other face J" lower down onf thebreaker plate is slightly inclined to the;

horizontal plane and'extends under the ham-1; mer circle'as shown in Figure 1. The quarry rock indicated iby dashed lines, slips down i the breaker plate-and is retarded when' it by thehammers H'and a piece comparatively arrangement of hammers as shown, operatesx to make[cubes of twelve 1nch to fivelnch,

suitablefor burning into lime, and with com-: j" parativelyhsmallamount of finelycrushed 1 "material, which is desirable, in this case."

This operation differs from that of a;

crusher having hammersall of the. same length,such as all like :the hammerI-I, which I have been found to make comparatively 7105,

small pieces, such as; four inch and finer,

suitable formacadam,-but not desirable for I burning into lime. V

The hinged breaker plate shown 1 is adjusted to and from the hammerfcircle 1 10 7 strikes the lower. face J where itisstruck- .1

by keys K K, or other suitable means, to obtain the best co-operation between the breaker plate and hammers in producing the desired size of rock with my long and short hammers, as above described.

I claim:

1. A crusher comprising a casing, a breaker plate, and a rotor having eccentrically pivoted hammers arranged in rows substantially parallel to the axis,tl1e hammers in each row being alternately or" long and short pivotal length relatively to each other, and the short hammers having a relatively larger head to compensate for their shorter length and to equalize their striking effect compared to the long hammers.

2. A. crusher comprising a casing, and a rotor having pivoted hammers mounted in said casing,the hammers being arranged in rows substantially parallel to the axis of the rotor,the pivotal length of the hammers in each row being alternately long and short relatively to each other, and the Width in the planes of rotation of the short hammers in each row being Wider than that of the long hammers and their efiective striking edges being at substantially the same distance from the same pivot axis as the long hammers, so'

ARTHUR F. WILLIAMS. 

